[7] Code of Good Practice for the Reduction of Emissions of CFCs
R11 and R12 in Refrigeration and Air Conditioning Applications, Comisión de las
Comunidades Europeas, Biblioteca de AcciónOzono 473, 1988

[9] Code of Practice for the Minimization of Environmental
Pollution during the Servicing and Repair of Automotive Air-Conditioning Equipment, Part I, Establishment of Procedures for the Servicing and Repair of Road Vehicles’ Comfort-Cooling Air-Conditioning Equipment, South African Bureau of Standards, Biblioteca de AcciónOzono 781, 1993